| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [vb pp] [prep] the 1930s | 8 |
|
| 2 | have [been] [vb pp] [prep] the 1930s | 8 |
|
| 3 | [verb] [been] [vb pp] in the 1930s | 5 |
|
